Yes, as of Centova Cast v2.1.0, this is supported.

To begin, choose one of your Centova Cast servers to act as the "primary" server in your cluster. This will be the server to which your billing system connects to provision accounts across the cluster of servers.

To enable API clustering, you must edit your Centova Cast system configuration file (usually /home/centovacast/system/config.php) on your primary Centova Cast server and add the following line:

define('ENABLE_API_CLUSTERING',true);

Once this line has been added, perform the following steps:

1. Login to the primary Centova Cast server's administration area.

2. Click the Remote Servers link (in the left-hand column) to launch the Remote Servers page.

3. On the Remote Servers page, add each of the servers that you want to use for new accounts. When adding each server, be sure to set the "Include in API cluster" option to "Yes".

4. Click the "Settings" link (in the left-hand column) to launch the Settings page.

5. On the settings page, under "Single Sign-on", set the "Provisioning server for API clustering" option to the server on which all new accounts should be provisioned. If you want to evenly distribute the accounts, set it to "The server with the fewest accounts".

Centova Cast is now ready for distributed account provisioning.

Now you must set up Centova Cast in your billing system. Do this as per the instructions in the Centova Cast installation guide. Note that you do not need to set up all of your Centova Cast servers in the billing system; you should only setup the "primary" server (which you chose in step 1 above) in your billing system, and Centova Cast will automatically ensure that the accounts are provisioned on the correct servers.